Asthma ugg!

My youngest has Asthma and his seems to be getting worse as he gets older. I really don't like giving him medication every day. He was born with severe eczema all over his body the dermatologist put him on elidel cream which was not approved for children under two but his was so bad she thought he needed it. Well a year after he was on it studies showed increase risk for lymphoma's with the use of that medication...My pediatrician said more studies need to be done, but I was not going to take the risk. I was not consistent using it, but I have been very cautious ever since about giving my son something everyday. Now I wonder did I make things worse by not giving him his zytrec religiously. I had another situation with one of my twins and allergy medicine singulair a daily prescription medication, I saw on the news that it was causing anxiety or depression in children. Which actually had happened to my daughter she was have anxiety attacks, panic attacks...she started getting nervous about all sorts of stuff it was so out of character she was always so easy going. I immediately stopped that & honestly she really got better.
I have had to put my son on a nebulizer machine so many times since September I have lost count. I am going to the allergist tomorrow with him to be re-evaluated.